Pumping unit



uFlume 27, 1950 Filed May 10, 1947 A. P. RUTH PUMPING UNIT 2 Sheets-Sheet l A. P RUTH PUMPING UNIT June 27, 1950 2 Sheets-Sheet 2 Filed May 10, 1947 Patented June 27; 1950 Arthur P. Ruth, Houston, Tex. A

Application my 10, 1941, saai 0,

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1 Claim. (01. 163-5) This invention relates to a pumping unit.

An object of the invention is to provide a combined pressure tank and pump wherein the pressure of the liquid in the tank will augment the suction of the pump to the end that the range of lift of the pump will be increased.

It is another object of the present invention to provide a pumping unit of the character described which is provided with a housing that encloses the pump, with a suction line leading from the well, or other source of water and entering the pump through the housing and a discharge line leading from the housing into a pressure tank; with a return pressure line leading from the bottom of the tank into the housing, said housing being so located with respect to the tank that the pump will at all times be submerged in the water in the housing so that it will not be necessary to prime the pump.

It is a further object of the present invention to provide a pumping unit of the character described which will operate automatically.

Other objects and advantages will be apparent from the following specification which is illustrated by the accompanying drawings, wherein:

Figure l is a side elevation of the unit, partly in section.

Figure 2 is a plan view thereof.

Figure 3 is a side view of the motor, pump and housing, said pump and housing being shown in section, and

Figure 4 is a cross-sectional view of the pump taken on the line 44 of Figure 3.

Referring now more particularly to the drawings wherein like numerals of reference designate the same parts in each of the figures, the numeral I designates a pressure tank leading from which there is a service line 2 to the point of utilization.

Alongside the tank there is a housing 3 preferably of a conical shape connected into small end of which there is a suction line 4 which is extended down into the well or other source of water.

Secured within the large end of the housing there is a centrifugal pump 5 which embodies a casing 6 and an impeller I within said casing. The impeller is fastened to a shaft 8 of a motor 9. Preferably an electric motor is employed.

The pump casing is formed with an external annular flange III which may be bolted or otherwise secured to the large end of the housing 3.

The motor and pump are preferably constructed as a unit, as best illustrated in Figure 3.

The pump casing is provided with side out- 2 discharged into the pressure chamber I2 within the housing 3 and in which the pump is located.

A Venturi tube I3 is located within the pressure chamber in the housing 3 and one end thereof is connected into the intake of the pump, as shown in Figure 3, and there is a nozzle pipe I4, one end of which is connected to the other end of the Venturi tube I3 and whose other end is connected into the small end of the housing preferably by means of threads. This nozzle pipe I4 has a passageway I5 through which water can flow from the suction line 4 into the Venturi passageway through the tube I3 and the nozzle pipe I4 has one or more side inlet passageways, as I6, and within said nozzle pipe and connected into said passageways there is a nozzle I I through which the water, under pressure, may pass and be discharged through the opening of said nozzle into the Venturi passageway.

Leading from the housing, preferably from the large end thereof, there is a delivery pipe I8 which enters the tank I at a point above the level of the housing 3 and leading from the bottom of the tank I and connected into the housing 3 preferably at the bottom of the housing there is a return pressure line I9.

During the operation of the pump, water will be drawn in through the suction line 4 passing through the passageway I5 into the Venturi tube I3 and will be discharged out through the side outlets II into the chamber I2 of the housing 3 and will pass thence through the delivery pipe I8 into the tank I.

On the tank I there is a, conventional pressure switch mechanism 20 which is arranged to be opened by air pressure in the tank I in the usual way to break the electrical circuit through the conductors 2| to the pump to stop. the pump.

As the tank I is filled with water the air therein will be placed under pressure which will eventually operate to open the switch and stop the pump, as above indicated and as water is drawn off from the tank the pressure will decrease and the switch will be closed in the usual manner and the pump will be started thus discharging water from the housing 3 into the tank I until sufilcient pressure is built up to again open the switch and stop the pump.

The pressure of the water in the tank I will be transmitted through the pipe I9 into the housing 3 and the pressure in said housing will be thereby increased thus accelerating the flow of water through the passageway I6 and nozzle I1 and thus augmenting the suction of the pump thus lets, as II, II, through which the water may be 33 giving the pump a greater range of lift.

The drawings and description are illustrative merely while the broad principle of the invention will be defined by the appended claim.

What I claim is:

A pumping unit comprising, a pressure tank, a housing outside of the tank containing a single chamber, a pump in the housing chamber having a suction line leading through the chamber to the pump, that portion of the suction line within the chamber including a Venturi tube connected into the pump and .-,a nozzle pipe; connected to the Venturi tube, said Venturi tube having-a passageway therethrough, said nozzle pipe having a side inlet passageway leading from the chamber and also having a nozzle which is provide d v ith 5 an opening directed toward said passageway through the Venturi tube and through-which side inlet passageway and ngzzle water i n the chamber may enter said Venturi passageway, 'a'

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delivery pipe leading from the chamber remote from said inlet passageway and entering the tank at a point above the level of the housing chamber and a return pressure line leading from the tank adjacent the lower end of the tank and entering the chamber adjacent said inlet passageway.

ARTHUR P. RUTH.

REFERENCES CITED The followiiigfreferencesare of; record in the file of this patent: v

UNITED STATES PATENTS Number Name Date 2,257,507 Mann Sept. 30, 1941 ;.;3, 3,8Q, 924 Carpenter Aug. 7, 1945 Z ,:195,556 Ruth July 9, 1946 

